default to en instead of None

diff --git a/docs/conf.py b/docs/conf.py
index 44577df0436ba435de6cfd3d1a69875eb489a131..a8628abf91ec5138961a0bfac645b469ad72b2b0 100644 (file)
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -59,7 +59,7 @@ release = "1.0"
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.